CVE-2026-29964

Description

HSC MailInspector v5.3.3-7 contains a Cross-Site Scripting (XSS) vulnerability in the /tap/tap.php endpoint due to improper neutralization of user-controlled input using alternate or obfuscated JavaScript syntax. The endpoint reflects unsanitized user input in HTTP responses without adequate output encoding, allowing a remote attacker to execute arbitrary JavaScript code in the context of a victim's browser.

CVSS Vector

References

• https://github.com/sql3t0/cve-disclosures
• https://github.com/sql3t0/cve-disclosures/blob/main/03_-_CVE-2026-29964_XSS.md
• https://hsclabs.com/pt-br/mailinspector/